Where does “spinitis” come from?

spinitis (English) comes from English spine, from Middle English spyne, from Old French espine, from Latin spīna, from Proto-Italic speinā, from Proto-Indo-European spēy- — to stretch; thrive; succeed.

spinitis (English): inflammation of the spinal cord in the horse, etc

Definitions

  1. inflammation of the spinal cord in the horse, etc

Ancestry of “spinitis”, step by step

spinitis traces back through two separate lines of ancestry.

via English spine

StepLanguageWordMeaning
1EnglishspineThe series of bones situated at the back from the...
2Middle EnglishspyneA spine
3Old Frenchespinespine; backbone; spine; spike
4Latinspīnaa thorn or a thorny tree or shrub, such as whitethorn, hawthorn, or blackthorn
5Proto-Italicspeināthorn
6Proto-Indo-Europeanspēy-to stretch; thrive; succeed

via English itis

StepLanguageWordMeaning
1EnglishitisA medical condition accompanied by inflammation;...
2English-itisSuffix denoting diseases characterized by...
3New Latin-ītis
4Ancient Greek-ῖτιςfemale equivalent of -ίτης
Every word from Proto-Indo-European spēy-Every word from Proto-Italic speināEvery word from Latin spīna
spinitis — Etymology, Origin & Word History | Etymology Explorer